Search Results - "Smith, John N."

Fukushima Daiichi-Derived Radionuclides in the Ocean: Transport, Fate, and Impacts by Buesseler, Ken, Dai, Minhan, Aoyama, Michio, Benitez-Nelson, Claudia, Charmasson, Sabine, Higley, Kathryn, Maderich, Vladimir, Masqué, Pere, Morris, Paul J, Oughton, Deborah, Smith, John N

“…The events that followed the Tohoku earthquake and tsunami on March 11, 2011, included the loss of power and overheating at the Fukushima Daiichi nuclear power…”
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Recent changes in Arctic Ocean circulation revealed by iodine-129 observations and modeling by Karcher, Michael, Smith, John N., Kauker, Frank, Gerdes, Rüdiger, Smethie Jr, William M.

“…Anthropogenic radionuclides released into European coastal waters from nuclear fuel reprocessing plants at Sellafield (UK) and La Hague (France) flow northward…”
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Arrival of the Fukushima radioactivity plume in North American continental waters by Smith, John N., Brown, Robin M., Williams, William J., Robert, Marie, Nelson, Richard, Moran, S. Bradley

“…The large discharge of radioactivity into the northwest Pacific Ocean from the 2011 Fukushima Dai-ichi nuclear reactor accident has generated considerable…”
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Recent Transport History of Fukushima Radioactivity in the Northeast Pacific Ocean by Smith, John N, Rossi, Vincent, Buesseler, Ken O, Cullen, Jay T, Cornett, Jack, Nelson, Richard, Macdonald, Alison M, Robert, Marie, Kellogg, Jonathan

“…The large inventory of radioactivity released during the March, 2011 Fukushima Dai-ichi nuclear reactor accident in Japan spread rapidly across the North…”
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Nuclear Reprocessing Tracers Illuminate Flow Features and Connectivity Between the Arctic and Subpolar North Atlantic Oceans by Casacuberta, Núria, Smith, John N

“…Releases of anthropogenic radionuclides from European nuclear fuel reprocessing plants enter the surface circulation of the high-latitude North Atlantic and…”
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Iodine-129, 137Cs, and CFC-11 tracer transit time distributions in the Arctic Ocean by Smith, John N., McLaughlin, Fiona A., Smethie Jr, William M., Moran, S. Bradley, Lepore, Kate

“…Time series measurements of the nuclear fuel reprocessing tracers, 129I and 137Cs, and ventilation tracer, CFC‐11, were used to determine circulation time…”
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Mercury Profiles in Sediments of the Arctic Ocean Basins by Gobeil, Charles, Macdonald, Robie W, Smith, John N

“…Total Hg distributions have been measured for seven sediment cores collected from the major basins of the Arctic Ocean during the Arctic Ocean Section in 1994…”
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Circulation timescales of Atlantic Water in the Arctic Ocean determined from anthropogenic radionuclides by Wefing, Anne-Marie, Casacuberta, Núria, Christl, Marcus, Gruber, Nicolas, Smith, John N

“…The inflow of Atlantic Water to the Arctic Ocean is a crucial determinant for the future trajectory of this ocean basin with regard to warming, loss of sea…”
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Synoptic 129I and CFC–SF6 Transit Time Distribution (TTD) Sections Across the Central Arctic Ocean From the 2015 GEOTRACES Cruises by Smith, John N., Smethie, W. M., Casacuberta, Nuria

“…Measurements of the tracers, 129I, CFC‐11, and SF6 on water samples collected in the Arctic Ocean in 2015 have been used to calculate mean ages, Γ and mixing,…”
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Polycyclic Aromatic Hydrocarbon Composition and Potential Sources for Sediment Samples from the Beaufort and Barents Seas by Yunker, Mark B, Snowdon, Lloyd R, Macdonald, Robie W, Smith, John N, Fowler, Martin G, Skibo, Donald N, McLaughlin, Fiona A, Danyushevskaya, A. I, Petrova, V. I, Ivanov, G. I

“…Understanding the sources and pathways of pollutant transport to the Arctic is fundamental to our custody of this sensitive ecosystem. To achieve such an…”
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Circulation Timescales and Pathways of Atlantic Water in the Canada Basin: Insights From Transient Tracers 129I and 236U by Payne, Annabel, Wefing, Anne‐Marie, Christl, Marcus, Vockenhuber, Christof, Williams, William, Smith, John N., Casacuberta, Núria

“…Anthropogenic radionuclides 129I and 236U are used to investigate pathways of the Atlantic Water flow in the Canada Basin, estimate transport timescales, and…”
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Changes in temperature and tracer distributions within the Arctic Ocean: results from the 1994 Arctic Ocean section by Carmack, Eddy C., Aagaard, Knut, Swift, James H., MacDonald, Robie W., McLaughlin, Fiona A., Peter Jones, E., Perkin, Ronald G., Smith, John N., Ellis, Katherine M., Killius, Linus R.

“…Major changes in temperature and tracer properties within the Arctic Ocean are evident in a comparison of data obtained during the 1994 Arctic Ocean Section to…”
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A Changing Arctic Ocean: How Measured and Modeled 129I Distributions Indicate Fundamental Shifts in Circulation Between 1994 and 2015 by Smith, John N., Karcher, Michael, Casacuberta, Nuria, Williams, William J., Kenna, Tim, Smethie, William M.

“…129I measurements on samples collected during GEOTRACES oceanographic missions in the Arctic Ocean in 2015 have provided the first synoptic 129I sections…”
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Time series measurements of transient tracers and tracer‐derived transport in the Deep Western Boundary Current between the Labrador Sea and the subtropical Atlantic Ocean at Line W by Smith, John N., Smethie, William M., Yashayev, Igor, Curry, Ruth, Azetsu‐Scott, Kumiko

“…Time series measurements of the nuclear fuel reprocessing tracer 129I and the gas ventilation tracer CFC‐11 were undertaken on the AR7W section in the Labrador…”
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Late Holocene environmental conditions in Coronation Gulf, southwestern Canadian Arctic Archipelago: evidence from dinoflagellate cysts, other non-pollen palynomorphs, and pollen by Pieńkowski, Anna J., Mudie, Peta J., England, John H., Smith, John N., Furze, Mark F. A.

“…Boxcore 99LSSL‐001 (68.095° N, 114.186° W; 211 m water depth) from Coronation Gulf represents the first decadal‐scale marine palynology and late Holocene…”
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Protactinium-231 and Thorium-230 Abundances and High Scavenging Rates in the Western Arctic Ocean by Edmonds, Henrietta N., Moran, S. Bradley, Hoff, John A., Smith, John N., Edwards, R. Lawrence

“…The Canadian Basin of the Arctic Ocean, largely ice covered and isolated from deep contact with the more dynamic Eurasian Basin by the Lomonosov Ridge, has…”
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Impact of historical gold mining activities on marine sediments in Wine Harbour, Nova Scotia, Canada by Little, Megan E, Parsons, Michael B, Law, Brent A, Milligan, Timothy G., Smith, John N

“…Past investigations at historical gold (Au) districts in Nova Scotia, Canada have identified elevated concentrations of arsenic (As) and mercury (Hg) in nearby…”
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Simulating transport of ¹²⁹I and idealized tracers in the northern North Atlantic Ocean by Orre, Steinar, Smith, John N, Alfimov, Vasily, Bentsen, Mats

“…Transport of the radioactive tracer Iodine-129 (¹²⁹I, T ₁/₂ = 15.7 Myr) in the northern North Atlantic Ocean has been investigated using a global isopycnic…”
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Circulation features in the central Arctic Ocean revealed by nuclear fuel reprocessing tracers from Scientific Ice Expeditions 1995 and 1996 by Smith, John N., Ellis, Katherine M., Boyd, Timothy

“…Measurements of the tracer radionuclides 129I and 137Cs were conducted on seawater samples collected during the Scientific Ice Expedition cruises to the Arctic…”
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Investigating the carbon cycle in the Gulf of Maine using the natural tracer thorium 234 by Charette, Matthew A., Moran, S. Bradley, Pike, Steven M., Smith, John N.

“…The naturally occurring radionuclide 234Th (t1/2 = 24.1 days) was used to examine the organic carbon cycle in the Gulf of Maine. A seasonal study (March, June,…”
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